I have the mai 970a-g46 mobo and the cpu is a and fx8350you'll have to check what CPUs your motherboard supports on it's current BIOS revision and ensure your new one is supported.
without supplying actual hardware details no one can offer you much advice.
Also I tried 2 different fx8350 both black screened and they both work on different mobosI have the mai 970a-g46 mobo and the cpu is a and fx8350
What was your original cpu?Also I tried 2 different fx8350 both black screened and they both work on different mobos
Where would I check bios revisionI have the mai 970a-g46 mobo and the cpu is a and fx8350